at-eli-mcp

An MCP server for RIS (data.bka.gv.at), Austria's official legal information system (Rechtsinformationssystem des Bundes, operated by the Bundeskanzleramt). It searches and retrieves Austrian federal legislation (Bundesrecht) and case law (Judikatur) with verifiable ELI identifiers, native ECLI for decisions, and Austrian citations.

Part of the MateMatic eu-legal-mcp production line - the Austrian member, after the Polish sejm-eli-mcp and the German de-eli-mcp. Same architecture and citation contract, RIS source.

Scope. Covers Austrian federal law (Bundesrecht) and case law (Judikatur, with a native ECLI). State law (Landesrecht) is a later feature. Every response carries a dataset_note.

Licence. Austrian Bundesgesetzblatt content and statutes are official works in the public domain; RIS is published as Open Government Data (keyless). This connector relays that public content with attribution and a source_url.

The tools

Tool	What it does
at_search	Search federal law (GET /Bundesrecht) by free text and/or title.
at_get_text	Fetch an act's full text (html or xml) from a hit's content URL.
at_case_search	Search case law (GET /Judikatur) by free text, choosing a court (applikation). Hits carry a native ecli.
at_get_case_text	Fetch a decision's full text from a case hit's content URL.
at_list_collections	List the RIS collections and which are exposed.

Every response carries the contract: eli_uri (a full ELI URL, e.g. https://www.ris.bka.gv.at/eli/bgbl/I/2026/6/20260218), human_readable_citation (e.g. Datenschutzgesetz, BGBl. I Nr. 165/1999), and source_url.

Install

cd at-eli-mcp
pip install -e .

Configure (Claude Code / any MCP client)

{
  "mcpServers": {
    "at-eli-mcp": { "command": "at-eli-mcp" }
  }
}

Environment:

• AT_ELI_BASE_URL - default https://data.bka.gv.at/ris/api/v2.6
• AT_ELI_CACHE_DIR - default ~/.matematic/cache/at-eli
• AT_ELI_AUDIT_DIR - default ~/.matematic/audit

No API key. RIS is keyless Open Government Data.

Governance

• Public data only - read-only against RIS; no client data leaves the machine beyond search parameters.
• Audit log - every tool call appends one JSON line to ~/.matematic/audit/at-eli-mcp.jsonl.
• Vendor-neutral - talks only to data.bka.gv.at and (for full text) ris.bka.gv.at; no LLM provider, no telemetry.
• Host-restricted text - full text is fetched only from ris.bka.gv.at.

See CONSTITUTION.md and DISCOVERY.md.

Tests

pip install -e ".[dev]"
pytest tests/test_instructions_drift.py -v   # offline
pytest tests/test_smoke.py -v                # hits live RIS

Licence

Apache-2.0. © Matematic Solutions / Wieslaw Mazur.